Method and apparatus for forming three-dimensional crimf
in yarn of continuous length filamentary
thermoplastic material

ABSTRACT

METHOD AND AN APPARATUS FOR FORMING THREE-DIMENSIONAL CRIMP OF RANDOM CONFIGURATION IN A YARN OF CONTINUOUS FILAMENTS OF MAN-MADE MATERIAL WITH SUBSTANTIALLY NO S AND Z TWIST REVERSALS IN THE INDIVIDUAL CRIMPED FILAMENTS BY HEATING THE YARN TO A CRIMP RECEPTIVE CONDITION BY A HEATED COMPRESSIBLE FLUID AND USING THE FLUID TO CONVEY THE YARN AT HIGH SPEED INTO A CRIMPING ZONE AT AT AN ANGLE OF ABOUT SIX (6) TO TWELVE (12) DEGREES ABOVE THE CENTERLINE OF THE CRIMPING ZONE, FORMING A PLUG OF YARN IN THE CRIMPING ZONE WITH THE UPSTREAM FACE OF THE PLUG BEING IN SUBSTANTIALLY FLAT RELATIONSHIP AT SUBSTANTIALLY RIGHT ANGLES TO THE PATH OF LINEAR MOVEMENT OF THE PLUG AS IT MOVES THROUGH AND FROM THE CRIMPING ZONE, AND COOLING THE YARN PLUG BELOW THE HEATED CRIMP RECEPTIVE CONDITION BEFORE REMOVING THE YARN FROM THE PLUG.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request oi. the applicant or owner in accordance with the Notice of Dec. 18. 1969, 869 0.6. 887. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading or each abstract indicates the number of pages of specification, including claims and sheets oi drawings contained in the application as originally flied. The files or these applications are available to the public for inspection and reproduction may be purchased tor 80 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofllce makes no assertion u to the novelty or the disclosed subject matter.

PUBLISHED AUGUST 6, 1974 Int. Cl. D02g 1/12 US. Cl. 281.6 3 Sheets Drawing. 18 Pages Specification Method and an apparatus for forming three-dimensional crimp of random configuration in a yarn of continuous filaments of man-made material with substantially no S and Z twist or twist reversals in the individual crimped filaments by heating the yarn to a crimp receptive condition by a heated compressible fiuid and using the fluid to convey the yarn at high speed into a crimping zone at an angle of about six (6) to twelve (12) degrees above the centerline of the crimping zone; forming a plug of yarn in the crimping zone with the upstream face of the plug being in substantially flat relationship at substantially right angles to the path of linear movement of the plug as it moves through and from the crimping zone; and cooling the yarn plug below the heated crimp receptive condition before removing the yarn from the plug.

Au 6, 1974 w. e. FAW L 90 I -DIMENSIONAL CRIMF METHOD AND APPARATUS FOR FORMING THREE IN YARN OF CONTINUOUS LENGTH FILAMENTAR-Y THERMOPLASTIC MATERIAL Original Filed Sept. 13, 1972 3 Sheets-Sheet J.

Aug. 6, 1974 w, w ETAL T925,009

METHOD AND APPARATUS FOR FORMING THREE-DIMENSI L CRIMP IN YARN 0F CONTINUOUS LENGTH FILAMENTA THERMOPLASTIC MATERIAL Original Filed Sept. 13, 1972 5 Sheets-Sheet 2 Aug. 6, 1974 w. G; FAW ETAL METHOD AND APPARATUS FOR FORMING THREE-DIMENSIONAL CRIMP IN YARN 0F CONTINUOUS LENGTH FILAMENTARY I THERMOPLASTIC MATERIAL v Original Filed Sept. 13 1972 5 Sheets-Sheet 

